Sell hydro station control panel-neutral grounding resistor @China (Mainland)

 Operating Environment
    1.Indoor application
     2.Environment temperature between -40℃ and +40℃
     3. Altitude does not excess 3000m
     4. Rlative humidity is not more than 95% (25℃)
     5.Power grid frequency: 58～62Hz(60Hz system)、48～52Hz(50Hz system)
     6.No corrosive gas or stem and no explosive dust on installation site.
Parameters of Grounding Transformer
Insulation Grade: H
Cooling-down Method: AN
Temperature Rise ≤ 100K
Proctective Grade of paper insulation dry-type connected transformer is IP00 (without casing), IP20 and ip23 (with casing)
Insulation level, impedance voltage, no-load loss and on-load loss are as per National Standards.
Test of inpedance: high voltage to low voltage or grouding ≥300 MΩ, low voltage to grounding ≥100 100 MΩ

Post by Mery Miao    Electrical Equipment & Supplies    @2012-04-14 15:45:14